12121211203012 has 6 divisors (see below), whose sum is σ = 21212119605278. Its totient is φ = 6060605601504.

The previous prime is 12121211202977. The next prime is 12121211203033. The reversal of 12121211203012 is 21030211212121.

It can be written as a sum of positive squares in only one way, i.e., 10120644239616 + 2000566963396 = 3181296^2 + 1414414^2 .

It is a super-2 number, since 2×12121211203012² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515151400373 + ... + 1515151400380.

Almost surely, 2^{12121211203012} is an apocalyptic number.

It is an amenable number.

12121211203012 is a deficient number, since it is larger than the sum of its proper divisors (9090908402266).

12121211203012 is a wasteful number, since it uses less digits than its factorization.

12121211203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030302800757 (or 3030302800755 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12121211203012 its reverse (21030211212121), we get a palindrome (33151422415133).

The spelling of 12121211203012 in words is "twelve trillion, one hundred twenty-one billion, two hundred eleven million, two hundred three thousand, twelve".